[PATCH] scheduler cache-hot-autodetect
[linux-2.6.git] / include / asm-ia64 / topology.h
1 /*
2  * linux/include/asm-ia64/topology.h
3  *
4  * Copyright (C) 2002, Erich Focht, NEC
5  *
6  * All rights reserved.
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  */
13 #ifndef _ASM_IA64_TOPOLOGY_H
14 #define _ASM_IA64_TOPOLOGY_H
15
16 #include <asm/acpi.h>
17 #include <asm/numa.h>
18 #include <asm/smp.h>
19
20 #ifdef CONFIG_NUMA
21 /*
22  * Returns the number of the node containing CPU 'cpu'
23  */
24 #define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu])
25
26 /*
27  * Returns a bitmask of CPUs on Node 'node'.
28  */
29 #define node_to_cpumask(node) (node_to_cpu_mask[node])
30
31 /*
32  * Returns the number of the node containing Node 'nid'.
33  * Not implemented here. Multi-level hierarchies detected with
34  * the help of node_distance().
35  */
36 #define parent_node(nid) (nid)
37
38 /*
39  * Returns the number of the first CPU on Node 'node'.
40  */
41 #define node_to_first_cpu(node) (first_cpu(node_to_cpumask(node)))
42
43 /*
44  * Determines the node for a given pci bus
45  */
46 #define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
47
48 void build_cpu_to_node_map(void);
49
50 #define SD_CPU_INIT (struct sched_domain) {             \
51         .span                   = CPU_MASK_NONE,        \
52         .parent                 = NULL,                 \
53         .groups                 = NULL,                 \
54         .min_interval           = 1,                    \
55         .max_interval           = 4,                    \
56         .busy_factor            = 64,                   \
57         .imbalance_pct          = 125,                  \
58         .per_cpu_gain           = 100,                  \
59         .cache_nice_tries       = 2,                    \
60         .busy_idx               = 2,                    \
61         .idle_idx               = 1,                    \
62         .newidle_idx            = 2,                    \
63         .wake_idx               = 1,                    \
64         .forkexec_idx           = 1,                    \
65         .flags                  = SD_LOAD_BALANCE       \
66                                 | SD_BALANCE_NEWIDLE    \
67                                 | SD_BALANCE_EXEC       \
68                                 | SD_WAKE_AFFINE,       \
69         .last_balance           = jiffies,              \
70         .balance_interval       = 1,                    \
71         .nr_balance_failed      = 0,                    \
72 }
73
74 /* sched_domains SD_NODE_INIT for IA64 NUMA machines */
75 #define SD_NODE_INIT (struct sched_domain) {            \
76         .span                   = CPU_MASK_NONE,        \
77         .parent                 = NULL,                 \
78         .groups                 = NULL,                 \
79         .min_interval           = 8,                    \
80         .max_interval           = 8*(min(num_online_cpus(), 32)), \
81         .busy_factor            = 64,                   \
82         .imbalance_pct          = 125,                  \
83         .cache_nice_tries       = 2,                    \
84         .busy_idx               = 3,                    \
85         .idle_idx               = 2,                    \
86         .newidle_idx            = 0, /* unused */       \
87         .wake_idx               = 1,                    \
88         .forkexec_idx           = 1,                    \
89         .per_cpu_gain           = 100,                  \
90         .flags                  = SD_LOAD_BALANCE       \
91                                 | SD_BALANCE_EXEC       \
92                                 | SD_BALANCE_FORK       \
93                                 | SD_WAKE_BALANCE,      \
94         .last_balance           = jiffies,              \
95         .balance_interval       = 64,                   \
96         .nr_balance_failed      = 0,                    \
97 }
98
99 #endif /* CONFIG_NUMA */
100
101 #include <asm-generic/topology.h>
102
103 #endif /* _ASM_IA64_TOPOLOGY_H */